# Call Checker vs Check Book Register

The clearest difference is in-app purchases: Call Checker at none against Check Book Register's 10. Check Book Register's advantage is update cadence (every 9 days vs every 23 months) and chart position (#149 vs unranked). On price, ads, device support and iOS requirement there is nothing between them.

Call Checker costs $0.99 and Check Book Register $0.99 up front. Check Book Register sells 10 one-off in-app purchases. Call Checker asks for nothing beyond the download.

Call Checker ships an update every 23 months, Check Book Register every 9 days. The most recent releases landed on September 22, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Call Checker | Check Book Register |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | — | **[1.9 (29 ratings)](https://appshunter.io/ios/app/check-book-register/id488517738/reviews)** |
| Number of ratings | — | **29** |
| Positive reviews | 0.0% of reviews | **10.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 9 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#149** |
| Size | 2 MB | 13 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [Manu Gupta](https://appshunter.io/developer/806110625) |

## What reviewers say

### Call Checker

[App page](https://appshunter.io/ios/app/call-checker/id292434428)

Easily track the local times of your international contacts to avoid calling at inconvenient hours. Quickly see who is available and initiate calls directly from the app.

**Highlights:** Track contact local times, Avoid bad calling hours, Check contact availability, Initiate calls directly (iPhone)

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

**In-app purchases:** none


### Check Book Register

[App page](https://appshunter.io/ios/app/check-book-register/id488517738)

**Currently charting:** #149 Top Paid · Business (US App Store)

Easily track expenses and develop an aggregate balance for personal or business finances. Save, reuse, and share financial progress reports via email or print.

**Highlights:** Record expenses, Develop aggregate balance, Save and reuse registers, Track financial progress, Share register statements via email, Locally save and print registers

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Email 10 Pdf | $0.99 | one-time |
| Share Pdf | $0.99 | one-time |
| Save 10 files to server | $0.99 | one-time |
| Email 10 PDFs via Gmail | $0.99 | one-time |
| 5 times Save as,Print and Email | $0.99 | one-time |
| Email 25 Pdf | $1.99 | one-time |
| Email 50 Pdf | $2.99 | one-time |
| Email 100 Pdf | $3.99 | one-time |
| 500 times Save as, Print and Email | $4.99 | one-time |
| 1000 times Save as, Print and Email | $6.99 | one-time |


## Frequently asked questions

### Is Call Checker free?

Call Checker costs $0.99, with no in-app purchases.

### Is Check Book Register free?

Check Book Register costs $0.99, and also offers in-app purchases.

### Do Call Checker or Check Book Register have ads?

Neither Call Checker nor Check Book Register shows ads.

### Which is updated more often, Call Checker or Check Book Register?

Call Checker ships an update every 23 months, and Check Book Register every 9 days. Most recently, Call Checker was updated on September 22, 2026 and Check Book Register on September 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.*