Aquivalent vs Watta
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Aquivalent
This app uses AI and a specialized kit to provide accurate water testing for pools and hot tubs. Simply scan test strips for instant readings on key chemical levels, helping you maintain healthy and safe water while saving on chemical costs.
- AI-enabled water testing
- Scan test strips for instant readings
- Tests for chlorine, alkalinity, pH, and more
- Durable and protective test strip kit
- Cost savings on pool chemicals
- Compatible with iPhone
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Experience unparalleled water testing accuracy with our AI-enabled app and aqua balancing kit. Compatible with iPhone, it transforms your smartphone into a precise water testing device for pools and hot tubs. Scan your test strips for instant, accurate readings, surpassing traditional methods. Our test strips are 100% thicker and 50% wider, ensuring reliability and ease of use. They test for free chlorine, total chlorine, total hardness, cyanuric acid, total alkalinity, and pH. The included protective case is rugged, waterproof, dustproof, drop-proof, and buoyant. This all-in-one kit simplifies pool care, serving as a water hardness test kit, chlorine tester, and green pool treatment. With 100 strips included, our kit lasts twice as long as others, reducing repurchase needs and cost per test. Smart technology, durable materials, and protective casing provide a reliable system for clear and safe water. Save 15-30% on annual chemical costs with our accurate system, eliminating overcompensation and ensuring balanced water. Ideal for maintaining your pool or spa with precision and cost efficiency, ensuring pristine, inviting water every time you swim
Watta
Effortlessly log your rowing, biking, and skiing workouts by simply taking a photo of your machine's screen. AI automatically extracts your performance data, organizing it into a comprehensive training log. Connect with your club, compete on leaderboards, and share your progress with teammates.
- AI photo data extraction
- Automatic workout logging
- Support for Concept2 monitors
- Manual workout entry
- Training history and trends
- Club and squad features
- Leaderboards and competition
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Every metre counts. Watta turns photos of your erg screen into a complete training log. Snap a picture of your Concept2 monitor after your workout, and AI extracts all your data automatically — distance, time, split, stroke rate, watts, calories, and more. No Bluetooth pairing. No cables. Just take a photo and you're done. Snap. Log. Done. Most rowers take photos of their erg screens after training. Those photos sit in camera rolls, never tracked, never analysed. Watta changes that. Upload a photo from your gallery and AI reads your PM5, PM4, or PM3 display in seconds - or any Rowing machine with a screen. Your data flows straight into your training log. You can also enter workouts manually if you prefer. Track every session See your full workout history in one place. Distance, time, average split, stroke rate, watts, heart rate, calories — all captured and organised. Review individual sessions or zoom out to spot trends across weeks and months of training. Join your club Watta is built for squad training. Join your rowing club, connect with your squad, and see how your teammates are training. Club admins can create squads, manage members, and keep everyone connected. Whether you're part of a university programme, a local rowing club, or a national team, Watta keeps your crew together. Compete on leaderboards See where you rank. Leaderboards let you compare your performance against your squad, your club, or the wider Watta community. Push yourself to climb the rankings and celebrate when you hit a new personal best. Social feed Follow your teammates and see their workouts in your feed. React to big sessions and leave comments. Training is better when you're not doing it alone. Works with all Concept2 monitors Watta supports PM5, PM4, and PM3 displays, and any rowing machine with a screen. The AI handles different screen layouts, angles, and lighting conditions. It even works with photos of rowers, bikes, and ski ergs. Row. Bike. Ski. Watta isn't just for rowing. Log your sessions on the Concept2 RowErg, BikeErg, or SkiErg — all in one app. Your data, organised Stop losing workouts to your camera roll. Watta gives you a proper training log that grows with every session. See your progress. Spot patterns. Get faster. Download Watta and start logging your metres. Watta is a fitness tracking app, not a medical device. Consult your physician before beginning any exercise program and before making any health-related decisions.
Screenshots
Verdict
The clearest difference is rating: Watta at 5.0 against Aquivalent's 3.5. Watta also leads on update cadence (weekly vs monthly). Aquivalent's advantage is ratings volume (8 vs 1). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Watta holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: Aquivalent has 8 ratings behind it against 1, so its average is the more settled of the two.
Aquivalent ships an update monthly, Watta weekly. The most recent releases landed on June 5, 2026 and September 9, 2026 respectively.
| Parameter | Aquivalent | Watta |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (8 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 8 — better | 1 |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 78 MB | 36 MB |
| Age rating | 4+ | 17+ |
| Developer | Aquatic clear solutions, LLC | STEPHEN CHRISTOPHER MILTON |
Customer experience
Aquivalent
Watta
In-app purchases
Aquivalent
No in-app purchases
Watta
No in-app purchases









