GrowLearn vs FLY
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GrowLearn
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100 Grow Pets is an educational app where kids raise 100 different pets while learning about them. Features: - Raise 100 pets through 3 growth stages: Baby → Juvenile → Adult - Available in multiple languages - Flashcards, quiz, silhouette quiz, raising tab, collection (5 tabs) - Card back: lifespan, food, care difficulty, habitat - Feed your pet — appearance and cry sound evolve through 3 stages - 'Raise' button to grow multiple pets at once - Home dashboard for quick access to pets you are raising - Original cry sound for every pet at every stage (300 unique sounds) Free Content: - Selected starter pets: dog, cat, hamster, goldfish, parakeet - Access to all features A caring adventure that nurtures love for living creatures! A Learning Report for parents shows your child's favourites, the kinds of things they are drawn to, and a record of the last two weeks. It stays on the device and is never sent anywhere. Premium unlocks the full collection and adds auto read-aloud, which turns the cards and speaks each name hands-free — handy in the car or at bedtime.
FLY
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A pet fruit fly driven by a model of its real brain. FLY runs a whole-brain model of Drosophila in real time on your phone: 138,639 neurons and 15 million connections from the FlyWire connectome, mapped with an electron microscope. When you drop sugar in the terrarium, touch the antennae or cast a shadow, the stimulus travels through the fly's actual wiring, and that decides whether it feeds, grooms or escapes. • 3D glass terrarium with a fly based on the NeuroMechFly model, walking with a real fly's step cycle • Live brain map: see which neurons are firing right now • Hunger, thirst, hormones and sleep: a hungry fly is more sensitive to sugar and sleeps at night • Your fly keeps living when the app is closed and lets you know when it gets hungry • Lab: watch the firing rates of the neurons behind feeding, grooming and escape Honestly: this is a scientific model, not an uploaded fly. The wiring is real, the neurons are simplified. Hunger, hormones, sleep and walking are simplified models based on the literature. The Science & Licenses screen explains what is what. Free, no ads, no tracking, no account. Data: FlyWire (Dorkenwald et al. 2024, Schlegel et al. 2024), brain model by Shiu et al. 2024, body from NeuroMechFly (Wang-Chen et al. 2024).
Screenshots
Verdict
The clearest difference is in-app purchases: FLY at none against GrowLearn's 1. On price, ads, device support and iOS requirement 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. GrowLearn sells 1 one-off in-app purchase. FLY asks for nothing beyond the download.
| Parameter | GrowLearn | FLY |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.4 — better | 27.0 |
| Further details — not scored | ||
| Size | 154 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Sami Kuribara | Tadeas Urbanek |
In-app purchases
GrowLearn
- プレミアム - なかま100種$2.99
FLY
No in-app purchases









