# DIGITCA vs SurvivalKnife

The clearest difference is update cadence: DIGITCA at every 2 days against SurvivalKnife's every 3 weeks. DIGITCA also leads on device support (3 vs 1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. DIGITCA sells 1 one-off in-app purchase and SurvivalKnife sells 2 in-app purchases, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for DIGITCA against 5.0 for SurvivalKnife. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

DIGITCA ships an update every 2 days, SurvivalKnife every 3 weeks. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | DIGITCA | SurvivalKnife |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/digitca/id6766617649/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/survivalknife/id6777308743/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 59 MB | 170 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [matous petran](https://appshunter.io/developer/1628862850) | [Atherton Labs LLC](https://appshunter.io/developer/6777308745) |

## What reviewers say

### DIGITCA

[App page](https://appshunter.io/ios/app/digitca/id6766617649)

This app provides a persistent, scrollable tape calculator that remembers every entry. Edit past numbers and see totals update live. It includes conversion tools and natural language input for calculations.

**Highlights:** Persistent scrollable tape, Editable calculations, Autosave functionality, Unit and currency converter, Natural language input, Scientific keyboard, Interactive Home Screen widget

**Features:** Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DIGITCA Full | $5.99 | one-time |


### SurvivalKnife

[App page](https://appshunter.io/ios/app/survivalknife/id6777308743)

Build a personalized emergency preparedness plan for your household, including medications, pets, and vehicles. Access offline maps, routing, and essential supplies inventory. Stay informed with local alerts and daily survival lessons.

**Highlights:** Personalized household emergency plans, Offline maps and turn-by-turn routing, Inventory management and needs calculator, Household records and private vault, Local alerts and notifications, Daily survival lessons and field guide

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Field Edition | $19.99 | per year |
| Family Edition | $39.99 | per year |


## Frequently asked questions

### Is DIGITCA free?

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

### Is SurvivalKnife free?

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

### Which has better reviews, DIGITCA or SurvivalKnife?

DIGITCA and SurvivalKnife are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do DIGITCA or SurvivalKnife have ads?

Neither DIGITCA nor SurvivalKnife shows ads.

### Which is updated more often, DIGITCA or SurvivalKnife?

DIGITCA ships an update every 2 days, and SurvivalKnife every 3 weeks. Most recently, DIGITCA was updated on October 24, 2026 and SurvivalKnife on October 23, 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.*