# eXact iDip vs Kactoily

The clearest difference is rating: eXact iDip at 4.0 against Kactoily's 2.5. eXact iDip also leads on review sentiment (67% vs 25%) and ratings volume (56 vs 11). Kactoily's advantage is in-app purchases (none vs 18) and update cadence (every 9 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. eXact iDip sells 18 one-off in-app purchases. Kactoily asks for nothing beyond the download.

eXact iDip holds the better App Store score, 4.0 against 2.5. That said, the two scores are not equally well evidenced: eXact iDip has 56 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 67% of eXact iDip's written reviews are positive against 25% of Kactoily's.

eXact iDip ships an update every 6 weeks, Kactoily every 9 days. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | eXact iDip | Kactoily |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (56 ratings)](https://appshunter.io/ios/app/exact-idip/id579168702/reviews)** | [2.5 (11 ratings)](https://appshunter.io/ios/app/kactoily/id6744716298/reviews) |
| Number of ratings | **56** | 11 |
| Positive reviews | **66.7% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 41 MB | 62 MB |
| Requires iOS | 15.6 | **13** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Industrial Test Systems Inc.](https://appshunter.io/developer/579168705) | [彦浩 宋](https://appshunter.io/developer/1808803601) |

## What reviewers say

### eXact iDip

[App page](https://appshunter.io/ios/app/exact-idip/id579168702)

This app transforms your smartphone into a powerful water testing tool. It works with a handheld photometer to provide accurate water analysis, store data, and track locations. Customize your testing with over 40 additional parameters available for purchase.

**Highlights:** Share test data via CSV, Seamless smartphone integration, Parameter information and data storage, GPS tracking, Over 40 purchasable test parameters, Quick and simple testing procedure

**Features:** macOS Compatibility

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chloride CH | $4.99 | one-time |
| Copper CU | $4.99 | one-time |
| Hardness, Total Low THL | $4.99 | one-time |
| Iron, Total FE | $4.99 | one-time |
| Nitrate, Fresh NO3 | $4.99 | one-time |
| Phosphate PO4 | $4.99 | one-time |
| Sulfate SO4 | $4.99 | one-time |
| Hardness, Total High THH | $4.99 | one-time |
| Calcium CA | $4.99 | one-time |
| Cyanuric Acid CY-III | $4.99 | one-time |
| Manganese MN | $4.99 | one-time |
| Chlorine, Total (DPD-4) CL | $4.99 | one-time |
| Turbidity TU | $4.99 | one-time |
| Bromine, Total (DPD-4) bR | $4.99 | one-time |
| Pool Bundle | $8.99 | one-time |
| Smart Brew Bundle | $18.99 | one-time |
| 570 Marine Bundle | $23.99 | one-time |
| Well Bundle | $34.99 | one-time |

**What reviewers like**

- 💯 Accurate results
- ⏱️ Quick testing
- ✅ Easy to use
- 💡 Innovative technology
- 💰 Value for money

**What reviewers complain about**

- ❌ Bluetooth connection issues
- 📉 Poor user interface
- 💸 Expensive test strips/algorithms
- ⚠️ Inconsistent results
- 🚫 GPS/location required

**Reported bugs**

- Bluetooth connection problems
- App crashes on launch or during use
- Lost purchased tests after update
- Results data goes missing
- Store section not showing items

**Requested features**

- Improve user interface and navigation
- Allow setting customer/site once for personal use
- Provide actual readings instead of 'LO'/'HIGH'
- Full screen support for iPhone X and iPads
- Better interface/integration between devices


### Kactoily

[App page](https://appshunter.io/ios/app/kactoily/id6744716298)

This app monitors water quality for pools, aquariums, and other water bodies. It helps users track key parameters to ensure optimal conditions. The application provides essential data for maintaining healthy aquatic environments.

**Highlights:** Water quality monitoring, Pool monitoring, Aquarium monitoring, Data tracking, Environmental maintenance

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is eXact iDip free?

eXact iDip is free to download, with in-app purchases available.

### Is Kactoily free?

Kactoily is free to download, with no in-app purchases.

### Which has better reviews, eXact iDip or Kactoily?

eXact iDip is rated higher. eXact iDip averages 4.0 out of 5 from 56 ratings, while Kactoily averages 2.5 from 11 ratings.

### Do eXact iDip or Kactoily have ads?

Neither eXact iDip nor Kactoily shows ads.

### Which is updated more often, eXact iDip or Kactoily?

eXact iDip ships an update every 6 weeks, and Kactoily every 9 days. Most recently, eXact iDip was updated on October 20, 2026 and Kactoily on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*