# Syphere Lockerbox vs DeepSign

The clearest difference is in-app purchases: Syphere Lockerbox at none against DeepSign's 4. Syphere Lockerbox also leads on iOS requirement (15.1 vs 17.0). DeepSign's advantage is update cadence (every 3 weeks vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. DeepSign sells 4 one-off in-app purchases. Syphere Lockerbox asks for nothing beyond the download.

Syphere Lockerbox ships an update every 5 months, DeepSign every 3 weeks. The most recent releases landed on September 6, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | Syphere Lockerbox | DeepSign |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/deepsign/id6460978837/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 29 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Synomics AG](https://appshunter.io/developer/1567606596) | [DeepCloud AG](https://appshunter.io/developer/1581724030) |

## What reviewers say

### Syphere Lockerbox

[App page](https://appshunter.io/ios/app/syphere-lockerbox/id1576931346)

**Features:** macOS Compatibility

**In-app purchases:** none


### DeepSign

[App page](https://appshunter.io/ios/app/deepsign/id6460978837)

Digitally sign and send any document or contract securely and legally from your phone. Verify identities for free with an integrated app. Track signing progress in real-time.

**Highlights:** Sign and send PDFs and contracts, Legally valid eSignatures, Send sign requests and add co-signers, Free ID validation with DeepID, Signature history, Secure data storage in Switzerland

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 QES Signatures | $6.99 | one-time |
| 12 SES Signatures | $6.99 | one-time |
| 40 SES Signatures | $22.99 | one-time |
| 10 QES Signatures | $22.99 | one-time |


## Frequently asked questions

### Is Syphere Lockerbox free?

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

### Is DeepSign free?

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

### Do Syphere Lockerbox or DeepSign have ads?

Neither Syphere Lockerbox nor DeepSign shows ads.

### Which is updated more often, Syphere Lockerbox or DeepSign?

Syphere Lockerbox ships an update every 5 months, and DeepSign every 3 weeks. Most recently, Syphere Lockerbox was updated on September 6, 2026 and DeepSign on June 7, 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.*