Comparison

LetSeeApp vs Block Spam

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

Head to head
About

LetSeeApp

This app provides visual recognition and detection tools for visually impaired individuals. It can identify banknotes and plastic cards, and measure light levels. Users simply point their camera at an object, and the app announces the result.

Highlights
  • Banknote recognition (multiple currencies)
  • Plastic card recognition
  • Light measurement tool
  • Customizable currency recognition
  • VoiceOver compatibility
  • Offline processing
Features
Read full description

LetSee is an app for vision. It integrates different visual recognition and detection functions for visually impaired people. The basic operating principle for most functions is super easy: just point the camera towards the target and wait until you hear the result. To cycle through functions swipe sideways with three fingers or activate the the selected function button (with VoiceOver ON). *Money reader* It recognizes banknotes of several currencies: AFRICA: South African rand ASIA: Chinese yuan, Indian rupee, Japanese yen, Saudi riyal, South Korean won, Thai baht EUROPE: Belarusian ruble, British pound, Czech crown, Euro, Hungarian forint, Polish złoty, Romanian leu, Russian ruble, Serbian dinar, Swiss franc, Turkish lira, Ukrainian hryvnia NORTH AMERICA: Canadian dollar, Mexican peso, US dollar OCEANIA: Australian dollar, New Zealand dollar SOUTH AMERICA: Argentine peso, Brazilian real, Chilean peso, Colombian peso, Peruvian sol It has a menu option to disable the recognition of unused currencies, which increases the recognition speed and reduces energy consumption. *Plastic card recognizer* You have to register your own cards through the menu. Thereafter it works the same way as the money reader does. Card images are not stored and no sensitive information is saved, only the general design of the card is recognized. *Light measurement tool* This is not a recognizer function. Instead it measures the light level to let you find light sources, such as spotlights, screens, or even windows. The stronger the light the higher the pitch of the tone you hear. You may also get a percentage value by tapping the screen. Different sound scales can be selected in the menu. On iPhone light measurement is based on your back camera. You might need some practice first. We advise you to place the camera of your smartphone onto the object you want to recognize and slowly start pulling it upwards. Once you reach a proper distance the recognition result will be announced. It can also be helpful to slightly and slowly tilt, pan, and turn your device. Use this app at your own risk. Keep in mind that even at 99.9% accuracy machines can still make mistakes. It might make sense to wait for a few announcements for each object. Your data is yours. Although we use your camera to recognize banknotes and cards from your surroundings, we do not collect or send these images anywhere. Processing is also done locally on your smartphone, thus for regular use no internet connection or data roaming is needed. We are constantly working on improving our services and introducing more features. If you have any questions, feedback or feature request, please email us at info@letseeapp.com

About

Block Spam

Features
Read full description

Block Spam is a software that can customize caller identification and call blocking. Just edit the number to be identified / blocked, and click [Reload Extension] to complete the configuration. * Custom caller identification and call blocking * Batch block phone numbers * Show the country / region where the number is added * Support multi-country number addition * Clear all blocked calls with one click Tips: After each operation, please click [Reload Extension] to take effect. If you are prompted that you do not have permission, please enter the permission in the phone [Settings]-> [Phone]-> [Call blocking & Identification].

Screenshots

LetSeeApp4 screens
Block Spam4 screens

Verdict

The call

The clearest difference is price: LetSeeApp at Free against Block Spam's $0.99. LetSeeApp also leads on iOS requirement (12.0 vs 15.6). Block Spam's advantage is in-app purchases (none vs 10). On update cadence, 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

LetSeeApp is free to download; Block Spam costs $0.99 up front. LetSeeApp sells 10 one-off in-app purchases. Block Spam asks for nothing beyond the download.

UpkeepUpdate frequency

LetSeeApp ships an update every 3 months, Block Spam every 4 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
LetSeeApp versus Block Spam: the parameters behind the verdict, then further details
ParameterLetSeeAppBlock Spam
PriceFree — better$0.99
Rating4.0 (3 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size98 MB11 MB
Age rating4+4+
DeveloperJedlik Innovacio Korlatolt Felelossegu Tarsasag恒俭 董

In-app purchases

10 purchases

LetSeeApp

One-time10
  • Chinese yuan - 2020$0.99
  • South Korean won - 2020$0.99
  • Mexican peso - 2020$0.99
Show 7 more
  • Czech koruna - 2022$0.99
  • Swiss franc - 2022$0.99
  • Chilean peso - 2022$0.99
  • Colombian peso - 2022$0.99
  • Peruvian sol - 2022$0.99
  • 20 extra card slots$2.99
  • 50 extra card slots$4.99
None

Block Spam

No in-app purchases

Questions

Is LetSeeApp free?
LetSeeApp is free to download, with in-app purchases available.
Is Block Spam free?
Block Spam costs $0.99, with no in-app purchases.
Do LetSeeApp or Block Spam have ads?
Neither LetSeeApp nor Block Spam shows ads.
Which is updated more often, LetSeeApp or Block Spam?
LetSeeApp ships an update every 3 months, and Block Spam every 4 months. Most recently, LetSeeApp was updated on October 12, 2026 and Block Spam on October 5, 2026.

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