# SunForm vs AcoustiCalc

The clearest difference is price: SunForm at Free against AcoustiCalc's $3.99. SunForm also leads on iOS requirement (15.1 vs 17). AcoustiCalc's advantage is in-app purchases (none vs 2) and update cadence (daily vs every 10 days). On ads and device support there is nothing between them.

SunForm is free to download; AcoustiCalc costs $3.99 up front. SunForm sells 2 in-app purchases, starting at $0.99 per month. AcoustiCalc asks for nothing beyond the download.

SunForm ships an update every 10 days, AcoustiCalc daily. Both last shipped on October 24, 2026.

## The numbers

| Metric | SunForm | AcoustiCalc |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sunform-quotation-and-bookkeeping/id6740758231/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Monetization | Subscription | — |
| Size | 31 MB | 43 MB |
| Requires iOS | **15.1** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Yeion Network Technology Co., Ltd](https://appshunter.io/developer/1573912038) | [TRIMECH Dhaker](https://appshunter.io/developer/1832697893) |

## What reviewers say

### SunForm

[App page](https://appshunter.io/ios/app/sunform-quotation-and-bookkeeping/id6740758231)

Streamline business operations by quickly generating professional receipts, quotations, and other essential documents. Manage finances, create custom reports, and avoid manual spreadsheet work with pre-built templates and an intuitive interface.

**Highlights:** Create receipts, quotations, and purchase orders, Manage business finances, Generate customizable reports, Pre-built document templates, Dark and light theme support, Export and print documents

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 野离子表单月会员 | $0.99 | per month |
| 野离子表单年会员 | $6.99 | per year |


### AcoustiCalc

[App page](https://appshunter.io/ios/app/acousticalc/id6764106645)

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

**In-app purchases:** none


## Frequently asked questions

### Is SunForm free?

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

### Is AcoustiCalc free?

AcoustiCalc costs $3.99, with no in-app purchases.

### Do SunForm or AcoustiCalc have ads?

Neither SunForm nor AcoustiCalc shows ads.

### Which is updated more often, SunForm or AcoustiCalc?

SunForm ships an update every 10 days, and AcoustiCalc daily. Most recently, SunForm was updated on October 24, 2026 and AcoustiCalc on October 24, 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.*