Comparison

Hark vs Simple Invoice Scanner

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Hark

Features
Read full description

"Easy and intelligent control of your pellet stove. When and where ever you like! At home or away, at every time! With the HARK pellet stove App you gain the full ease of use of your pellet stove. Additionally you can monitor your stove, where ever you are.ย  Various stoves in your house can be controlled by using the App. Several users can connect to the same stove to control it. You are able to read and change the current room temperature to feel comfortable. With the App you can easily create a weekend programme and transfer it directly to your stove. Keep an eye on your oven from a distance. You can always see in which current operating status the pellet stove is. The App will automatically inform you, when a cleaning or a technical service is necessary. Faults during operation of the oven will be sent as a push notification to your mobile device immediately. WLAN modules and functions are available for the following pellet stoves:"

About

Simple Invoice Scanner

Features
Read full description

No more paper piles: with Rechnung Scanner you snap invoices, bills and receipts and instantly get a clean PDF โ€“ ready for filing, bookkeeping or your accountant. HOW IT WORKS 1. Tap the camera button and hold the invoice in view โ€“ the page is detected and straightened automatically. 2. Several pages? Just scan them one after another, everything ends up in one PDF. 3. Done. The PDF is saved and, if you like, prepared as an e-mail right away. STRAIGHT TO YOUR ACCOUNTANT Enter your accountant's e-mail address once. After every scan, a ready-made e-mail opens with the PDF attached and the subject "Invoice from [date, time]". All you have to do is tap Send. ALL YOUR INVOICES AT A GLANCE The "Invoices" tab shows all saved documents sorted by month, with thumbnail, date, page count and file size. Tap to preview. Select several invoices and share them together via AirDrop, Mail, Messages or the Files app โ€“ perfect for month-end. YOU DECIDE WHERE IT'S SAVED โ€ข On your device โ€“ also in the Files app under "On My iPhone/iPad" โ€ข In iCloud Drive โ€“ in the "Rechnung-Scanner" folder, automatically on all your devices and in Finder on your Mac โ€ข Or both FAST WHEN IT NEEDS TO BE If you like, the camera opens right when the app starts. Open, scan, done. SIMPLE AND PRIVATE No account, no sign-up, no subscription. Your invoices stay on your device or in your iCloud and only go where you send them. FOR IPHONE AND IPAD In English and German, with Dark Mode and support for larger text. Rechnung Scanner is free and supported by ads. A one-time in-app purchase removes ads for good โ€“ also on your other devices with the same Apple ID.

Screenshots

Hark4 screens
Simple Invoice Scanner3 screens

Verdict

The call

The clearest difference is in-app purchases: Hark at none against Simple Invoice Scanner's 1. Hark also leads on iOS requirement (15.0 vs 18.1). On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Simple Invoice Scanner sells 1 one-off in-app purchase. Hark asks for nothing beyond the download.

UpkeepUpdate frequency

Hark ships an update every 12 months, Simple Invoice Scanner every 7 months. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

Scorecard2 real differences ยท 4 level
Hark versus Simple Invoice Scanner: the parameters behind the verdict, then further details
ParameterHarkSimple Invoice Scanner
PriceFreeFree
Update frequencyEvery 12 monthsEvery 7 months โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 โ€” better18.1
Further details โ€” not scored
Size6 MB9 MB
Age rating4+4+
DeveloperHark GmbH & Co. KG Kamin- u. KachelofenbauHermann Rauschmayr

In-app purchases

None

Hark

No in-app purchases

1 purchases

Simple Invoice Scanner

One-time1
  • Werbung entfernen$1.99

Questions

Is Hark free?
Hark is free to download, with no in-app purchases.
Is Simple Invoice Scanner free?
Simple Invoice Scanner is free to download, with in-app purchases available.
Do Hark or Simple Invoice Scanner have ads?
Neither Hark nor Simple Invoice Scanner shows ads.
Which is updated more often, Hark or Simple Invoice Scanner?
Hark ships an update every 12 months, and Simple Invoice Scanner every 7 months. Most recently, Hark was updated on November 11, 2026 and Simple Invoice Scanner on November 5, 2026.

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