Step Fish vs ThirtyThirty
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Step Fish
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Step Fish is a fun and engaging way to boost your daily step count. When you reach your daily goal, you’ll be rewarded with Fish Food - a virtual currency you can use to unlock unique creature packs. Each pack contains six different species and comes with a different Fish Food price. Available packs include the classic Fish Pack, the Tropical Fish Pack, the Whale Pack, the Dolphin Pack, the Jellyfish Pack, the Dinosaur Pack, and a Special Creatures Pack. You can also track your steps from the past week and stay motivated with a streak feature that grows as you consistently reach your daily goals. Personalize your aquarium by choosing your favorite fish, dragging them from your inventory into the tank, or releasing them back with ease. Whether you're walking for fun, fitness, or the thrill of collecting - Step Fish turns every step into progress.
ThirtyThirty
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Stiff from sitting all day? ThirtyThirty helps you build a daily deep squat habit—one short session at a time. Use the simple deep squat timer and habit tracker to take on the 30/30 challenge: accumulate 30 minutes of practice each day for 30 days. Your 30 minutes do not have to happen all at once. Start the timer, squat at a comfortable depth, and let short sessions add up throughout the day. WHY PRACTICE THE DEEP SQUAT? Long stretches at a desk, in a car, or in front of a screen can leave your body feeling stiff. Deep squat practice offers a simple way to break up sitting and spend time working on comfortable hip and ankle mobility. HOW THE 30/30 CHALLENGE WORKS • Start a session with one tap • Accumulate 30 minutes across the day • See exactly how much time remains • Track every completed session • Keep your streak alive • Complete the 30-day challenge BUILT FOR REAL LIFE One minute while the coffee brews. A few minutes after work. Another short hold during a screen break. ThirtyThirty turns small pockets of time into a consistent daily practice—without adding another complicated workout to your day. FEATURES • One-tap deep squat timer • Automatic session logging • Daily goal and progress tracking • Streak and challenge overview • Weekly progress views • Clean, distraction-free design PRIVATE BY DESIGN ThirtyThirty does not collect your data. THIRTYTHIRTY PRO Unlock deeper progress tracking with: • Unlimited session history • Detailed progress analytics • Achievement badges • Long-term trends and statistics Choose monthly, yearly, or lifetime access through an in-app purchase. START YOUR 30/30 CHALLENGE Take the first minute. Build the first streak. See what 30 days of consistency can do. Use a comfortable depth, take breaks, and stop if you feel pain. If you have an injury or medical condition, consult a qualified healthcare professional before starting. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Screenshots
Verdict
The clearest difference is in-app purchases: Step Fish at none against ThirtyThirty's 3. Step Fish also leads on update cadence (every 6 days vs every 3 months). 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. ThirtyThirty sells 3 in-app purchases, starting at $1.99 per month. Step Fish asks for nothing beyond the download.
Step Fish ships an update every 6 days, ThirtyThirty every 3 months. The most recent releases landed on September 15, 2026 and September 24, 2026 respectively.
| Parameter | Step Fish | ThirtyThirty |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 47 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | TILL WANNER | CENGIZ GURTUSGIL |
In-app purchases
Step Fish
No in-app purchases
ThirtyThirty
- Thirty Thirty Pro – Monthly$1.991 Month
- Thirty Thirty Pro – Yearly$3.991 Year
- Lifetime Access$4.99





