Comparison

Sign vs ATTC

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

Head to head
About

Sign

This iPad app digitizes paper signup sheets, allowing for unlimited custom lists with up to six configurable fields. Personalize the app's appearance with custom colors, logos, and background images. Export collected data easily via email or spreadsheet after events.

Highlights
  • Replace paper signup sheets
  • Unlimited custom lists
  • Up to 6 custom fields
  • Field type selection
  • Customizable appearance (color, logo, background)
  • Password protection
  • Data export via email/spreadsheet
Features
Read full description

Sign-Up Sheet replaces your paper lists with an iPad or iPhone app. Have unlimited lists with up to six custom fields, make them required or not and select field type. You can also customize the color, logo, background image, message and many of the features of the app. Export your lists after each event. - Replace your paper signup sheet - Collect names, emails, phones numbers...anything - Maintain multiple lists for different events - Up to 6 custom fields - Customize color, logo, messages. - Password protect your settings and lists

About

ATTC

Enhance your BMW's security and performance with an advanced anti-theft system. This device offers multiple driving modes, including an anti-theft feature that disables the accelerator pedal to prevent unauthorized use. Control it via your smartphone or a remote for a more responsive engine and potential fuel savings.

Highlights
  • Anti-theft mode
  • Valet mode
  • Multiple Power Pedal modes
  • Smartphone control
  • Remote control
  • 10% quicker acceleration
  • Fuel savings
Read full description

Give your BMW and BMW M a new way of anti-theft protection and at the same time a way better engine response with the dÄHLer Anti-Theft Throttle Commander combined with all Power Pedal features. Controlling of the dÄHLer ATTC via your smartphone is just one of the awesome features of our device. The revolutionary dÄHLer anti-theft system comes with an Anti-Theft Mode, a Valet Mode, different Power Pedal modes and is a must have if you want to protect your BMW or BMW M against theft. You control your dÄHLer Anti-Theft Throttle Commander – ATTC either with the in delivery included remote control or via your cell phone without losing sight of the essentials. In vehicles with a keyless go or a similarly functioning system, theft is carried out by means of a relay attack. The dÄHLer Anti-Theft Throttle Commander disables the accelerator pedal on the next vehicle start. This makes it impossible to rev-up the engine without having the dÄHLer remote control. It is not necessary to activate the Anti-Theft mode again after each stop. The function remains activated by default until the function is deactivated again. Selected optimization mode of the dÄHLer Anti-Theft Throttle Commander can be read at a glance as it is visualizing with a clear LED program and the device always remembers the last driver’s setting even after an engine stop. Optimized control signals also offer significant fuel savings depending on the driving mode. The dÄHLer Anti-Theft Throttle Commander actually sends the signal to the computer (BMW engine ECU) a lot quicker giving you a 10% quicker acceleration.

Screenshots

Sign4 screens
ATTC2 screens

Verdict

The call

The clearest difference is rating: ATTC at 5.0 against Sign's 1.8. ATTC also leads on in-app purchases (none vs 1) and iOS requirement (15.2 vs 18.0). Sign's advantage is update cadence (every 3 months vs every 27 months) and ratings volume (5 vs 1). On price, ads and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sign sells 1 one-off in-app purchase. ATTC asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ATTC holds the better App Store score, 5.0 against 1.8. That said, the two scores are not equally well evidenced: Sign has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Sign ships an update every 3 months, ATTC every 27 months. Both last shipped on October 16, 2026.

Scorecard6 real differences · 4 level
Sign versus ATTC: the parameters behind the verdict, then further details
ParameterSignATTC
PriceFreeFree
Rating1.8 (5 ratings)5.0 (1 ratings) — better
Positive reviews26.3% of reviews—
Number of ratings5 — better1
Update frequencyEvery 3 months — betterEvery 27 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.015.2 — better
Further details — not scored
Size13 MB6 MB
Age rating4+4+
DeveloperOrionbelt.com LLCDähler Competition Line (Deutschland) GmbH

Customer experience

Sign

All ratings5 ratings
Positive20.0%
Neutral0.0%
Negative80.0%
Written reviews19 reviews
Positive26.3%
Neutral26.3%
Negative47.4%

ATTC

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Sign

One-time1
  • Add Un-Limited Sing-Ups$7.99
None

ATTC

No in-app purchases

Questions

Is Sign free?
Sign is free to download, with in-app purchases available.
Is ATTC free?
ATTC is free to download, with no in-app purchases.
Which has better reviews, Sign or ATTC?
ATTC is rated higher. Sign averages 1.8 out of 5 from 5 ratings, while ATTC averages 5.0 from 1 ratings.
Do Sign or ATTC have ads?
Neither Sign nor ATTC shows ads.
Which is updated more often, Sign or ATTC?
Sign ships an update every 3 months, and ATTC every 27 months. Most recently, Sign was updated on October 16, 2026 and ATTC on October 16, 2026.

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