AquaTesterPro vs Sefy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AquaTesterPro
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Water testing is very easy with this app and the electronic water analyser from Velda. The AquaTesterPro is a water test device that measures the most important water values and sends the results via Bluetooth to the app. You will receive a complete diagnosis and advice to improve the water quality. All test results are saved in order to monitor developments of the GH, KH, pH, NO2, NO3 and more important water values. How does it work? The new way of water testing: 1. Dip the indicator of the water analyser into the water sample. 2. Slide the indicator through the device and read the test results. 3. Download the measured water values via the app and link them to the source. 4. Find out what the parameters say about the water quality of your pond, aquarium or pool.
Sefy
Discover personalized beauty content tailored to your unique features and desired makeup looks. Virtually try on makeup using advanced AI to see how you'd look before applying it.
- Personalized beauty content
- Virtual makeup try-on
- AI-driven realistic looks
- Customizable filter options
- Facial feature analysis
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Our platform is pivoting for K-beauty commerce. Thank you for testing our beta version and please wait for our grand open No need to sift through a crazy amount of un-personalised beauty tutorials! From your facial features like skin tone, hair colour, skin profile, and eye shape to your desired makeup end looks, Sefy provides you with numerous filter options for a more personalised beauty experience. Virtual Try-on! Have you ever wondered how you would look in the makeup look your fave guru is demonstrating in a video? Sefy uses the most advanced GAN (Generative Adversarial Network) algorithms to create the most-realistic-ever virtual makeup looks.
Screenshots
Verdict
The clearest difference is update cadence: Sefy at every 5 days against AquaTesterPro's every 3 months. AquaTesterPro's advantage is iOS requirement (11.2 vs 17.6). On price, ads, in-app purchases and device support 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.
AquaTesterPro ships an update every 3 months, Sefy every 5 days. The most recent releases landed on May 16, 2026 and September 9, 2026 respectively.
| Parameter | AquaTesterPro | Sefy |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (2 ratings) — better |
| Positive reviews | — | 80.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 3 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 11.2 — better | 17.6 |
| Further details — not scored | ||
| Size | 23 MB | 14 MB |
| Age rating | 4+ | 12+ |
| Developer | Velda B.V. | SEFY LTD |
In-app purchases
AquaTesterPro
No in-app purchases
Sefy
No in-app purchases
Questions
Is AquaTesterPro free?
Is Sefy free?
Do AquaTesterPro or Sefy have ads?
Which is updated more often, AquaTesterPro or Sefy?
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