# Acid Base pH vs DoodleConnect

The clearest difference is price: DoodleConnect at Free against Acid Base pH's $3.99. DoodleConnect also leads on ratings volume (56 vs 1) and iOS requirement (15.0 vs 17.1). Acid Base pH's advantage is review sentiment (100% vs 56%) and rating (5.0 vs 4.7). On update cadence, ads, in-app purchases and device support there is nothing between them.

DoodleConnect is free to download; Acid Base pH costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Acid Base pH holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: DoodleConnect has 56 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Acid Base pH's written reviews are positive against 56% of DoodleConnect's.

Acid Base pH ships an update every 3 months, DoodleConnect every 2 months. The most recent releases landed on August 20, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Acid Base pH | DoodleConnect |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/acid-base-ph/id977951851/reviews)** | [4.7 (56 ratings)](https://appshunter.io/ios/app/doodleconnect/id1176073180/reviews) |
| Number of ratings | 1 | **56** |
| Positive reviews | **100.0% of reviews** | 56.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 37 MB |
| Requires iOS | 17.1 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Discovery Education Inc.](https://appshunter.io/developer/1557216359) |

## What reviewers say

### Acid Base pH

[App page](https://appshunter.io/ios/app/acid-base-ph/id977951851)

Accurately estimate pH values for acid-base aqueous systems. Calculate pH for weak and strong acids/bases, plot titration curves, and find equivalent points. Export data and find titrant volumes for desired pH.

**Highlights:** Estimate pH of acid-base solutions, Plot titration curves, Find pH and titrant volume at equivalent points, Export titration plots as image or data, Calculate titrant volume for desired pH, Includes list of common indicators

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

**In-app purchases:** none


### DoodleConnect

[App page](https://appshunter.io/ios/app/doodleconnect/id1176073180)

Monitor your child's educational development across multiple learning applications. Stay informed about their achievements, progress through the curriculum, and receive real-time updates on their learning journey.

**Highlights:** Instant progress notifications, View latest achievements, Track stars earned, Follow curriculum progress

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

**In-app purchases:** none

**What reviewers like**

- 👍 Great for tracking progress
- 👍 Makes learning fun
- 👍 Interactive and engaging
- 👍 Good for home education
- 👍 Provides insightful data

**What reviewers complain about**

- 🐛 Glitches and bugs
- 🐛 App crashes/switches off
- 🐛 Syncing issues between devices
- 🐛 Not synching with Doodle Connect
- 🐛 Latest update ruined app

**Reported bugs**

- Losing streak
- No synching between apps on different devices
- Not synching with Doodle Connect app
- Latest update ruined the app
- Can't understand children's results anymore

**Requested features**

- Bring back old version
- More comprehensive initial test
- More challenging levels
- Option to add extra material for all students
- Better graphing options


## Frequently asked questions

### Is Acid Base pH free?

Acid Base pH costs $3.99, with no in-app purchases.

### Is DoodleConnect free?

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

### Which has better reviews, Acid Base pH or DoodleConnect?

Acid Base pH is rated higher. Acid Base pH averages 5.0 out of 5 from 1 ratings, while DoodleConnect averages 4.7 from 56 ratings.

### Do Acid Base pH or DoodleConnect have ads?

Neither Acid Base pH nor DoodleConnect shows ads.

### Which is updated more often, Acid Base pH or DoodleConnect?

Acid Base pH ships an update every 3 months, and DoodleConnect every 2 months. Most recently, Acid Base pH was updated on August 20, 2026 and DoodleConnect on September 21, 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.*