# ErrataCorrige vs Technician | AquaCertify.com

The clearest difference is in-app purchases: Technician | AquaCertify.com at none against ErrataCorrige's 4. ErrataCorrige's advantage is device support (4 vs 2). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. ErrataCorrige sells 4 one-off in-app purchases. Technician | AquaCertify.com asks for nothing beyond the download.

ErrataCorrige ships an update every 4 weeks, Technician | AquaCertify.com monthly. The most recent releases landed on October 3, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | ErrataCorrige | Technician | AquaCertify.com |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Size | 44 MB | 26 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Massimo Pavanel](https://appshunter.io/developer/1448634706) | [Consoli Tech](https://appshunter.io/developer/1657768164) |

## What reviewers say

### ErrataCorrige

[App page](https://appshunter.io/ios/app/erratacorrige/id1448634707)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25 errataCoin recharge | $1.99 | one-time |
| 50 errataCoin recharge | $2.99 | one-time |
| 75 errataCoin recharge | $3.99 | one-time |
| 100 errataCoin reload | $4.99 | one-time |


### Technician | AquaCertify.com

[App page](https://appshunter.io/ios/app/technician-aquacertifycom/id1553483969)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ErrataCorrige free?

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

### Is Technician | AquaCertify.com free?

Technician | AquaCertify.com is free to download, with no in-app purchases.

### Do ErrataCorrige or Technician | AquaCertify.com have ads?

Neither ErrataCorrige nor Technician | AquaCertify.com shows ads.

### Which is updated more often, ErrataCorrige or Technician | AquaCertify.com?

ErrataCorrige ships an update every 4 weeks, and Technician | AquaCertify.com monthly. Most recently, ErrataCorrige was updated on October 3, 2026 and Technician | AquaCertify.com on October 19, 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.*