https://denix.studio/blog Practical guides from denix.studio, an independent iPhone app studio. en https://denix.studio/blog/anonymous-apps-safety-tips https://denix.studio/blog/anonymous-apps-safety-tips Fri, 06 Nov 2026 09:00:00 GMT Guides Anonymous apps safety tips: privacy habits, what a display name hides and what it does not, how reporting and blocking work, and FoxTrail's 17+ rating. https://denix.studio/blog/baby-memory-book-ideas https://denix.studio/blog/baby-memory-book-ideas Fri, 06 Nov 2026 09:00:00 GMT Family Baby memory book ideas: what to record in the first year, a milestone table, photo tips, and privacy steps for keeping your child's photos private. https://denix.studio/blog/bmr-vs-tdee-calories-explained https://denix.studio/blog/bmr-vs-tdee-calories-explained Fri, 06 Nov 2026 09:00:00 GMT Health BMR vs TDEE explained: what each number means, how the Mifflin-St Jeor formula works, a worked example, and how to set a calorie target. https://denix.studio/blog/brainstorming-techniques-that-work https://denix.studio/blog/brainstorming-techniques-that-work Fri, 06 Nov 2026 09:00:00 GMT Productivity Six brainstorming techniques that work: mind map, 5 whys, SCAMPER, reverse brainstorming, starbursting and crazy eights, each with a clear example. https://denix.studio/blog/color-matching-games-to-train-your-eye https://denix.studio/blog/color-matching-games-to-train-your-eye Fri, 06 Nov 2026 09:00:00 GMT Games How color matching games train your eye, with hue, saturation and brightness explained, a worked HSL example and why some colors are hard to tell apart. https://denix.studio/blog/decision-making-techniques-that-work https://denix.studio/blog/decision-making-techniques-that-work Fri, 06 Nov 2026 09:00:00 GMT Productivity Decision making techniques that help you choose well: pros and cons, weighted scoring, the 10-10-10 rule and pre-mortems, with simple examples. https://denix.studio/blog/fun-ways-to-teach-kids-math https://denix.studio/blog/fun-ways-to-teach-kids-math Fri, 06 Nov 2026 09:00:00 GMT Family Simple, playful ways to teach kids math at home, from counting games to color patterns, and how to pick a safe kids math app for practice time. https://denix.studio/blog/how-good-is-your-color-vision https://denix.studio/blog/how-good-is-your-color-vision Fri, 06 Nov 2026 09:00:00 GMT Health Learn what color vision tests can and cannot tell you, why lighting and screens matter, and how a color matching game like Clash Palette works. https://denix.studio/blog/how-many-calories-to-lose-weight https://denix.studio/blog/how-many-calories-to-lose-weight Fri, 06 Nov 2026 09:00:00 GMT Health How many calories to lose weight: calculate your TDEE, set a moderate calorie deficit, check the weekly pace and see why progress stalls. With an example. https://denix.studio/blog/how-to-calculate-a-percentage-of-a-number https://denix.studio/blog/how-to-calculate-a-percentage-of-a-number Fri, 06 Nov 2026 09:00:00 GMT Money Calculate a percentage of a number with a simple formula, worked examples, a table and mental math tricks. Find X percent of Y, or the whole from a part. https://denix.studio/blog/how-to-calculate-a-tip-and-split-the-bill https://denix.studio/blog/how-to-calculate-a-tip-and-split-the-bill Fri, 06 Nov 2026 09:00:00 GMT Money Calculate a tip and split the bill with simple formulas, a table of common tip rates, rounding rules and a method for splitting by item. Check each step. https://denix.studio/blog/how-to-calculate-discount-vat-and-profit-margin https://denix.studio/blog/how-to-calculate-discount-vat-and-profit-margin Fri, 06 Nov 2026 09:00:00 GMT Money Calculate discounts, VAT and profit margin with clear formulas and worked examples. Learn why stacked discounts and margin differ from markup. Step by step. https://denix.studio/blog/how-to-calculate-macros https://denix.studio/blog/how-to-calculate-macros Fri, 06 Nov 2026 09:00:00 GMT Health How to calculate macros: protein, carbs and fat grams from a calorie target, using 4, 4 and 9 kcal per gram. Worked example and a table of splits. https://denix.studio/blog/how-to-calculate-percentage-increase https://denix.studio/blog/how-to-calculate-percentage-increase Fri, 06 Nov 2026 09:00:00 GMT Money Learn how to calculate percentage increase with the formula, worked examples and the common mistake. Check any price, pay or sales change with a clear formula. https://denix.studio/blog/how-to-clean-up-screenshots-on-iphone https://denix.studio/blog/how-to-clean-up-screenshots-on-iphone Fri, 06 Nov 2026 09:00:00 GMT Productivity Clean up screenshots on iPhone with a sorting method by type, a monthly routine and safe deletion steps. Keep receipts and codes, and remove the rest. https://denix.studio/blog/how-to-compress-a-pdf-on-iphone https://denix.studio/blog/how-to-compress-a-pdf-on-iphone Fri, 06 Nov 2026 09:00:00 GMT Productivity Compress a PDF on iPhone without uploading it. Learn why PDFs get large, how image quality affects file size, and the steps to shrink a file for email. https://denix.studio/blog/how-to-convert-photos-to-pdf-on-iphone https://denix.studio/blog/how-to-convert-photos-to-pdf-on-iphone Fri, 06 Nov 2026 09:00:00 GMT Productivity Convert photos to PDF on iPhone without uploading them. Learn the steps, page size and quality tips, and how to merge and compress the PDF afterwards. https://denix.studio/blog/how-to-delete-duplicate-photos-on-iphone https://denix.studio/blog/how-to-delete-duplicate-photos-on-iphone Fri, 06 Nov 2026 09:00:00 GMT Productivity Find and delete duplicate photos on iPhone safely. Use the built-in Duplicates album, learn what to keep from each set and avoid deleting the wrong shot. https://denix.studio/blog/how-to-do-a-weekly-review https://denix.studio/blog/how-to-do-a-weekly-review Fri, 06 Nov 2026 09:00:00 GMT Productivity How to do a weekly review in 20 minutes: a timed checklist for open actions, pending decisions and open loops, with a worked example for planning next week. https://denix.studio/blog/how-to-explore-your-city-on-foot https://denix.studio/blog/how-to-explore-your-city-on-foot Fri, 06 Nov 2026 09:00:00 GMT Guides How to explore your city on foot: walking routes, curiosity prompts, safety habits and a simple plan, with a FoxTrail option for notes you find nearby. https://denix.studio/blog/how-to-find-and-delete-large-videos-on-iphone https://denix.studio/blog/how-to-find-and-delete-large-videos-on-iphone Fri, 06 Nov 2026 09:00:00 GMT Productivity Find large videos on iPhone, learn how much space each minute of video takes by resolution, and delete them safely with a Recently Deleted check. https://denix.studio/blog/how-to-find-qibla-direction-and-prayer-times https://denix.studio/blog/how-to-find-qibla-direction-and-prayer-times Fri, 06 Nov 2026 09:00:00 GMT Faith How to find the Qibla direction and prayer times: how the bearing to the Kaaba is calculated, why prayer times differ by method, and how to check them locally. https://denix.studio/blog/how-to-free-up-iphone-storage https://denix.studio/blog/how-to-free-up-iphone-storage Fri, 06 Nov 2026 09:00:00 GMT Productivity Free up iPhone storage in practical steps: find what takes space, clear duplicate photos and big videos, and check old screenshots. Review first. https://denix.studio/blog/how-to-help-your-child-learn-multiplication https://denix.studio/blog/how-to-help-your-child-learn-multiplication Fri, 06 Nov 2026 09:00:00 GMT Family How to help your child learn multiplication at home: skip counting, arrays, a times-table patterns table and a 10-minute daily routine for parents. https://denix.studio/blog/how-to-improve-reaction-time-with-games https://denix.studio/blog/how-to-improve-reaction-time-with-games Fri, 06 Nov 2026 09:00:00 GMT Games Practical steps to improve reaction time with games: how to practice, how to track progress and what results really mean, with Orbit Quick Flip. https://denix.studio/blog/how-to-make-a-pros-and-cons-list https://denix.studio/blog/how-to-make-a-pros-and-cons-list Fri, 06 Nov 2026 09:00:00 GMT Productivity How to make a pros and cons list that helps you decide: weight each point, score each option, add totals, and check the result, with a worked example. https://denix.studio/blog/how-to-merge-pdf-files-on-iphone https://denix.studio/blog/how-to-merge-pdf-files-on-iphone Fri, 06 Nov 2026 09:00:00 GMT Productivity Merge PDF files on iPhone without uploading them. Learn how to set the page order, check the result and name the combined file clearly. Step by step. https://denix.studio/blog/how-to-organize-recipes-and-plan-meals https://denix.studio/blog/how-to-organize-recipes-and-plan-meals Fri, 06 Nov 2026 09:00:00 GMT Family Organize recipes and plan meals for the week with simple tags, a shopping list and a pantry check. Get the method, plus a way to do it on iPhone. https://denix.studio/blog/how-to-plan-weekly-meals-and-a-shopping-list https://denix.studio/blog/how-to-plan-weekly-meals-and-a-shopping-list Fri, 06 Nov 2026 09:00:00 GMT Family How to plan weekly meals and a shopping list: a 7-day template, batch cooking, a list sorted by store aisle and a pantry check. Includes a worked example. https://denix.studio/blog/how-to-start-a-private-journal https://denix.studio/blog/how-to-start-a-private-journal Fri, 06 Nov 2026 09:00:00 GMT Family How to start a private journal you will keep: pick a format, set a small daily habit, protect your entries and back them up on your own terms. https://denix.studio/blog/how-to-track-body-measurements https://denix.studio/blog/how-to-track-body-measurements Fri, 06 Nov 2026 09:00:00 GMT Health How to track body measurements at home: where to measure waist, hip, chest, arm, thigh and neck, why tape measurements help, and a weekly log example. https://denix.studio/blog/how-to-turn-ideas-into-an-action-plan https://denix.studio/blog/how-to-turn-ideas-into-an-action-plan Fri, 06 Nov 2026 09:00:00 GMT Productivity Turn an idea into an action plan in three steps: idea map, outline and roadmap with milestones. A worked example with an 8-week timeline and a task table. https://denix.studio/blog/location-based-notes-and-photo-trails https://denix.studio/blog/location-based-notes-and-photo-trails Fri, 06 Nov 2026 09:00:00 GMT Guides Location-based notes and photo trails explained: how to attach notes and photos to places, keep them useful and private, and read notes left nearby. https://denix.studio/blog/math-games-to-play-at-home https://denix.studio/blog/math-games-to-play-at-home Fri, 06 Nov 2026 09:00:00 GMT Family Eight math games to play at home with no prep, each with materials, an age range and the skill it trains. Includes a worked dice game and an app option. https://denix.studio/blog/mind-mapping-for-beginners https://denix.studio/blog/mind-mapping-for-beginners Fri, 06 Nov 2026 09:00:00 GMT Productivity Mind mapping for beginners: start with one central idea, add branches, connect related thoughts and review your map, with a simple example and tips. https://denix.studio/blog/one-tap-games-for-short-breaks https://denix.studio/blog/one-tap-games-for-short-breaks Fri, 06 Nov 2026 09:00:00 GMT Games One-tap games make good short breaks. Learn how to keep play sessions short, plan breaks around work, and raise your high score with simple timing tips. https://denix.studio/blog/privacy-first-iphone-apps-on-device https://denix.studio/blog/privacy-first-iphone-apps-on-device Fri, 06 Nov 2026 09:00:00 GMT Studio How privacy-first iPhone apps keep your data on the device, what on-device processing means, and how to check any app's privacy claims yourself. https://denix.studio/blog/ramadan-fasting-tips-and-tracking https://denix.studio/blog/ramadan-fasting-tips-and-tracking Fri, 06 Nov 2026 09:00:00 GMT Faith Practical Ramadan planning tips: suhoor and iftar timing, sleep, water and a simple tracking log with a worked weekly average, plus a Ramadan tracker app. https://denix.studio/blog/relationship-anniversary-ideas-and-memory-keeping https://denix.studio/blog/relationship-anniversary-ideas-and-memory-keeping Fri, 06 Nov 2026 09:00:00 GMT Family Relationship anniversary ideas and memory keeping: day counters, a yearly recap, small rituals and a simple record that keeps your story, with examples. https://denix.studio/blog/what-to-cook-with-ingredients-you-have https://denix.studio/blog/what-to-cook-with-ingredients-you-have Fri, 06 Nov 2026 09:00:00 GMT Family What to cook with ingredients you have: a pantry-first method, a substitution table and simple ways to cut food waste. Plus a way to search by ingredient on iPhone. https://denix.studio/blog/what-to-write-on-a-location-note https://denix.studio/blog/what-to-write-on-a-location-note Fri, 06 Nov 2026 09:00:00 GMT Guides What to write on a location note: ideas for cafes, parks and streets, a tone guide, what never to post, and short examples you can copy for FoxTrail.