# KilnLink vs SPAI Vault

The clearest difference is review sentiment: SPAI Vault at 100% against KilnLink's 17%. SPAI Vault also leads on rating (5.0 vs 1.9) and update cadence (every 6 days vs every 3 months). KilnLink's advantage is in-app purchases (none vs 3) and ratings volume (99 vs 4). On price, ads and device support there is nothing between them.

Both are free to download. SPAI Vault sells 3 one-off in-app purchases. KilnLink asks for nothing beyond the download.

SPAI Vault holds the better App Store score, 5.0 against 1.9. That said, the two scores are not equally well evidenced: KilnLink has 99 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 17% of KilnLink's written reviews are positive against 100% of SPAI Vault's.

KilnLink ships an update every 3 months, SPAI Vault every 6 days. The most recent releases landed on October 20, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | KilnLink | SPAI Vault |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (99 ratings)](https://appshunter.io/ios/app/kilnlink/id1422985590/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/spai-vault-secure-docs/id6760571010/reviews)** |
| Number of ratings | **99** | 4 |
| Positive reviews | 17.2% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 70 MB | 6 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Skutt Ceramic Products, Inc.](https://appshunter.io/developer/1422985589) | [Sindhu Shekar Chandrashekar](https://appshunter.io/developer/1885073320) |

## What reviewers say

### KilnLink

[App page](https://appshunter.io/ios/app/kilnlink/id1422985590)

Monitor and manage multiple kilns remotely. Check firing status and stay connected to your equipment from anywhere, ensuring peace of mind during operation.

**Highlights:** Connect to multiple kilns, Check kiln firing status remotely, Real-time monitoring, Backend API infrastructure updates, Password reset fix

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Basic monitoring is helpful
- 👍 Can track temperature remotely
- 👍 App details improved in recent update
- 👍 Connects and monitors firing status
- 👍 Free version is pretty good

**What reviewers complain about**

- 🐛 App doesn't work
- 🐛 Connection issues
- 🐛 Poor UI and design
- 🐛 Limited functionality
- 🐛 App is frustrating

**Reported bugs**

- App completely doesn't work
- Cannot see history or skip ahead
- Ridiculously complicated to connect
- Nothing works
- App forgets kiln when switching views

**Requested features**

- Upgrade to premium functionality
- Over-time displays
- Return to 'New View' functionality
- Functionality with Apple shortcuts
- Notifications for firing/cooling events


### SPAI Vault

[App page](https://appshunter.io/ios/app/spai-vault-secure-docs/id6760571010)

Securely store and manage important personal documents like passports and IDs on your device. Scan documents quickly, set expiration reminders, and keep everything organized in one private place.

**Highlights:** Secure document vault, Scan documents in seconds, Expiration date reminders, Organize all documents in one place, Create family profiles, Fast document search

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Us a Coffee | $1.99 | one-time |
| Support Development | $4.99 | one-time |
| Keep SPAI Vault Growing | $9.99 | one-time |


## Frequently asked questions

### Is KilnLink free?

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

### Is SPAI Vault free?

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

### Which has better reviews, KilnLink or SPAI Vault?

SPAI Vault is rated higher. KilnLink averages 1.9 out of 5 from 99 ratings, while SPAI Vault averages 5.0 from 4 ratings.

### Do KilnLink or SPAI Vault have ads?

Neither KilnLink nor SPAI Vault shows ads.

### Which is updated more often, KilnLink or SPAI Vault?

KilnLink ships an update every 3 months, and SPAI Vault every 6 days. Most recently, KilnLink was updated on October 20, 2026 and SPAI Vault on September 19, 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.*