Orenda vs SKIMMER
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Orenda
This app helps you master pool chemistry by accurately calculating chemical dosages and balancing water based on the LSI. It offers a user-friendly experience for both novices and professionals, including a volume estimator and educational videos.
- Chemical dosing calculator
- LSI water balancing
- Pool volume estimator
- User-friendly interface
- Educational videos
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Master pool chemistry with the Orenda pool chemical dosing calculator. Measure pool chemicals accurately while balancing water chemistry according to the LSI. The Orenda App is a swimming pool calculator with a user friendly experience, and makes pool chemistry easier than ever. Try the new pool volume estimator and watch Orenda videos in the app. A pool chemical calculator that allows a novice to dose chemicals as accurately as a professional pool operator.
SKIMMER
Control your pool skimmer's start, stop, and movement direction. Monitor device charging status and battery power directly from your mobile device.
- Control skimmer start/stop
- Control skimmer movement direction
- Display charging status
- Display battery power
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This is a simple app applied to the pool skimmer, the main function is to control the skimmer start 、stop and movement direction, as well as display device charging status 、 battery power and other information.
Screenshots
Verdict
The clearest difference is rating: Orenda at 4.7 against SKIMMER's 1.0. Orenda also leads on update cadence (monthly vs every 22 months) and ratings volume (478 vs 2). SKIMMER's advantage is iOS requirement (12.0 vs 15.0). 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.
Orenda holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Orenda has 478 ratings behind it against 2, so its average is the more settled of the two.
Orenda ships an update monthly, SKIMMER every 22 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.
| Parameter | Orenda | SKIMMER |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (478 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 81.8% of reviews | — |
| Number of ratings | 478 — better | 2 |
| Update frequency | Monthly — better | Every 22 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 78 MB | 10 MB |
| Age rating | 4+ | 17+ |
| Developer | Hasa Inc. | Taizhou Dibiao Technology Co., Ltd. |
Bugs and requests
Orenda
Reported bugs
4 issues- Desired levels changing when inputting current values
- Metric system not functioning as expected
- Slider feature for inputting readings is slow and frustrating
- App not optimized for all iPhone screen sizes
Requested features
5 requests- Ability to save pool volume and desired levels
- Option to log pool history and track trends
- Integration with pool chemical monitors
- Ability to set custom chemical concentrations
- Support for more languages (e.g., Chinese)
SKIMMER
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Orenda
No in-app purchases
SKIMMER
No in-app purchases
Questions
Is Orenda free?
Is SKIMMER free?
Which has better reviews, Orenda or SKIMMER?
Do Orenda or SKIMMER have ads?
Which is updated more often, Orenda or SKIMMER?
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