Tiny Worlds vs Discipline Trainer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tiny Worlds
This app transforms your daily walks into a growing virtual world. Earn new stages by reaching step goals, and collect unique, finished worlds as keepsakes. It's a gentle, pressure-free way to encourage movement and build a personal collection.
- Walk-based world growth
- Collect unique finished worlds
- No streaks or guilt
- Variety of world types
- Integrates with Apple Health
- Optional subscription for more content
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Every step grows a world. Tiny Worlds turns your daily walk into a living, little diorama. Your steps are the only fuel — walk, and a tiny world grows, one stage at a time, until it becomes something you keep forever. No streaks. No guilt. Nothing withers if you miss a day. Your worlds wait patiently for you. HOW IT WORKS • Walk — your steps power the world you're growing. That's the whole engine. • Grow — reach your daily step goal and your world climbs to its next stage. Six stages, from a bare seed to a thriving little world. • Keep — finished worlds become keepsakes in your collection, each saved with the steps you walked and the days you tended it. A CALM COLLECTION Every world you plant rolls its own unique look, so no two you grow are ever quite the same. Fill a quiet little museum of the places your walking has made — grouped and waiting, never demanding. WORLDS TO GROW Start with everyday worlds — rainforest, grassland, savanna — then discover exotic ones like coral reefs, wetlands, and volcanic lands. POWERED BY YOUR STEPS Tiny Worlds reads your step count from Apple Health (iPhone and Apple Watch) to grow your worlds — that's all it needs. Your health data stays on your device. GENTLE BY DESIGN Optional, quiet reminders when a world is ready to grow — and nothing more. No badges to chase, no leaderboards, no pressure. A calm companion, not a taskmaster. WORLD KEEPER An optional subscription for when you want more to discover: unlock the exotic worlds and keep your whole collection safe and synced across your devices. Every step grows a world. Start with the one you'll take next. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Discipline Trainer
Track your habits to nurture a virtual creature. Your progress directly influences its growth and exploration. Engage in battles and discover its world, all while keeping your promises.
- Habit tracking for creature growth
- Daily check-ins
- Creature exploration and battles
- Multiple creature types
- Home Screen and Lock Screen widgets
- Private by design, no tracking
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Keep a habit. Raise a creature. Every habit you track lays an egg. Keep your promise and it hatches — then it grows, day by day, from a wobbly baby to a winged adult, and at last into its prime. Let it down, and it leaves. Keep your word three days in a row, and it comes home. ONE CHECK-IN A DAY Once a day, tell it how it went. Kept your promise? It eats and grows stronger. Slipped? Say so honestly: it mopes for a while, then carries on. Nothing grows it but the habit itself. Check in from the app, the Lock Screen, Control Center, your Apple Watch or Siri. TO-DO LISTS THAT FIGHT BACK Keep lists in their own tab. Today's tasks call up a foe from your creature's world: each tick is a hit, and finishing the day beats it. Each task leaves a gem to find, and a list can keep its habit's day. Tasks can repeat daily, weekly or monthly, with a reminder that nags until they're done. EXPLORE ITS WORLD Every creature has a world to explore from above: the dragon's meadow, Zeus's Olympus, Hera's garden, Poseidon's sea, Holdfast's Proving Ground. Keep your promise and it lights up, a glimmering trail leading to the day's best find. Each day brings a board of goals, a visitor and errands from the stall keeper. Find gems, food and quote stones, and face the temptations that live there in turn-based battles that grow with your creature. A boss waits in every world, and its trophy stands at the nest once it's beaten. Keep your habit, and it goes further. GEMS, AND A STORE TO SPEND THEM Every gem your creatures find goes into one purse: an emerald is worth 1, a sapphire 2, a ruby 3, a star gem 5. Spend them in the Store on clothes any creature can wear and on treasures for each nest. Gems are found, never sold. CHOOSE YOUR CREATURE A dragon, or one of the Olympians: Zeus, Hera or Poseidon, each with powers and a home of their own. Or earn Holdfast, the warden of the Proving Ground, with 500 gems or a 60-day run. How you keep the habit shapes the adult it becomes: Gold, Dawn, Night or Comeback. IT LIVES WHILE YOU'RE AWAY Your creature lives its own day, app open or not: it sleeps at night, and trains, plays and naps by day. HOLD THE LINE When a craving hits, tap "I'm tempted". Your creature squares up to it with you for ten calm minutes. MEDITATE AND PLAY Meditate with your creature, from 1 to 20 minutes, with calm music and a gentle voice, or a soft tone you choose by its frequency. Or play Echo Stones, a memory game that grows harder each round, and Lookout, where you catch two things in a split-second glance. IT KEEPS A DIARY Every day gets a page in its diary, worded privately by Apple Intelligence where it's available, each sentence checked against what really happened. LET IT DOWN, AND IT LEAVES A NOTE Miss a day and it mopes. Two, and it packs its bag. Three bad days in a row and it leaves in the night, with a note. But it never dies: three good days in a row bring it home. YOUR STORY, AND YOUR DATA Your streak runs as a rail of pixels, with a flame that grows, and every milestone earns a badge for its wall. Its story shows every day as a pixel, your best and hardest days and how it grew, as a card or a video to share. Flip to Data for the numbers, in plain words or in full: kept rate with a 95% interval, streak survival, a forecast, a pivot table, a day-by-day log, and CSV or JSON export. FRIENDS, THROUGH MESSAGES Send your creature's card in Messages. Friends cheer it on, and it thanks them. ON YOUR HOME SCREEN, LOCK SCREEN AND WRIST Widgets for the Home Screen and the Lock Screen, today's tasks among them, tonight's check-in in the Dynamic Island, and an Apple Watch app with complications for your watch face. Gentle reminders, in its voice, when it's hungry and before it packs its bag. PRIVATE BY DESIGN No account. No ads. No tracking. Everything stays on your iPhone. ONE HABIT AND ONE LIST FREE Keep one habit and one list free, for good. One purchase — no subscription — keeps as many as you like.
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Verdict
The clearest difference is rating: Discipline Trainer at 5.0 against Tiny Worlds's 4.0. Discipline Trainer also leads on update cadence (daily vs fortnightly). Tiny Worlds's advantage is iOS requirement (17.0 vs 26.0). On price, review sentiment, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Tiny Worlds sells 2 in-app purchases, starting at $3.99 per month and Discipline Trainer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Discipline Trainer holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Tiny Worlds ships an update fortnightly, Discipline Trainer daily. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | Tiny Worlds | Discipline Trainer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Fortnightly | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 94 MB | 68 MB |
| Age rating | 4+ | 9+ |
| Developer | Mariano Wadi Jacobo | Rohit Sharma |
Customer experience
Tiny Worlds
Discipline Trainer
In-app purchases
Tiny Worlds
- World Keeper Monthly7 Days trial$3.991 Month
- World Keeper Annual7 Days trial$29.991 Year
Discipline Trainer
- Full Version$4.99









