# Fast e vs TitanLabs

The clearest difference is in-app purchases: Fast e at none against TitanLabs's 2. Fast e also leads on iOS requirement (10.0 vs 15.1). TitanLabs's advantage is update cadence (every 5 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. TitanLabs sells 2 in-app purchases, starting at $2.99 per month. Fast e asks for nothing beyond the download.

Fast e ships an update monthly, TitanLabs every 5 days. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Fast e | TitanLabs |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free | — |
| Size | 132 MB | 68 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fast Software Joint Stock Company](https://appshunter.io/developer/1484779984) | [Tien Duong Le](https://appshunter.io/developer/1769565377) |

## What reviewers say

### Fast e

[App page](https://appshunter.io/ios/app/fast-e-invoice/id1484779985)

This application allows businesses to create and manage electronic invoices. It integrates with other accounting and financial management software to streamline invoice generation and submission. Designed for companies with high invoice volumes and in-house IT teams.

**Highlights:** Electronic invoice creation, Integration with accounting software, Cloud server infrastructure, Self-managed infrastructure, Suitable for high invoice volumes

**Features:** macOS Compatibility

**In-app purchases:** none


### TitanLabs

[App page](https://appshunter.io/ios/app/titanlabs-pro-chart-and-ai/id6757972093)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $29.99 | per year |


## Frequently asked questions

### Is Fast e free?

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

### Is TitanLabs free?

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

### Do Fast e or TitanLabs have ads?

Neither Fast e nor TitanLabs shows ads.

### Which is updated more often, Fast e or TitanLabs?

Fast e ships an update monthly, and TitanLabs every 5 days. Most recently, Fast e was updated on October 13, 2026 and TitanLabs 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.*