Comparison

Chronographer vs Smart Spam Filter

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

Head to head
About

Chronographer

This app helps you meticulously track the accuracy of your mechanical watches. It records time differences, calculates detailed performance metrics, and visualizes trends with charts and histograms. You can also manage your watch collection, log daily wear, and analyze positional variations.

Highlights
  • Track mechanical watch accuracy
  • Calculate detailed performance metrics
  • Visualize accuracy with charts and histograms
  • Manage watch collection with notes and photos
  • Log daily watch wear
  • Analyze positional variation
  • Export watch data
Features
Read full description

Chronographer is for people who enjoy mechanical watches. It does two things: 1. Tracks your watches’ long-term accuracy 2. Records wrist time Chronographer can work with your whole watch collection. Create a “card” for each watch, giving it a name and, optionally, a longer description. Select a picture from your Photos library and add additional notes, such as the watch’s specifications, purchase details, and service history. All information is stored in iCloud and automatically synchronized between your devices. To track a watch’s accuracy, periodically collect data points comparing its indicated time to the current correct time. Chronographer tracks offsets (the difference from the correct time) and daily rate (how many seconds it gains or loses per day). It uses this information to create graphs and histograms that help you visualize your watch’s performance over time. Chronographer also calculates the following metrics: * Average offset * Max. positive offset * Max. negative offset * Last offset * Net gain/loss * Best-fit rate * Average rate * Fastest rate * Slowest rate * Last rate * Rate variance * Best-fit rate drift You can log the watch (or watches) that you wear each day. Chronographer’s wrist time tracking feature lets you see which watches you wear the most and how long it’s been since you’ve worn each one. You can use Chronographer to identify positional variation. When you record a data point, include the position (dial up, crown up, etc.) that the watch was stored in. Then, you can restrict the charts and metrics to specific positions and compare the results. Chronographer includes a large digital clock to help when you set your watches. For more information, including a detailed user’s guide, see https://www.rmfrance.net/chronographer

About

Smart Spam Filter

This AI-powered application automatically filters unwanted spam and smishing messages. It utilizes advanced AI models, both online and on-device, to detect and block new types of fraudulent texts in real-time. Additional features include custom blacklisting and whitelisting for enhanced control.

Highlights
  • AI-based spam/smishing filtering
  • Online real-time AI detection
  • On-device AI learning
  • Keyword and number blocking
  • Whitelist functionality
Features
Read full description

Smart AI spam blocker app created by Korean AI researcher Stock adverts, Toto rooms, bank fraud texts, expert reading rooms...  We have created a smart AI-based spam/smishing filtering app for those who are tired of countless spam texts and spam coming from new numbers even if you block them! Smart SMS spam/smishing auto filter app using the latest AI! AI mode without keyword registration! - Online AI: The smartest filtering to catch new types of spam and smishing in real-time. - On-device AI: Filtering done by AI on your phone that gets smarter every week. And more... - Blacklist word- and number-based blocking - Whitelist word and number-based filters Free yourself from spam!

Screenshots

Chronographer4 screens
Smart Spam Filter4 screens

Verdict

The call

The clearest difference is review sentiment: Smart Spam Filter at 98% against Chronographer's 50%. Smart Spam Filter also leads on rating (4.4 vs 3.4) and update cadence (monthly vs every 2 months). Chronographer's advantage is in-app purchases (none vs 2). On price, ratings volume, 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. Smart Spam Filter sells 2 in-app purchases, starting at $2.99 per month. Chronographer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Smart Spam Filter holds the better App Store score, 4.4 against 3.4. Both are backed by a comparable volume of ratings — 5 and 9 respectively. Written reviews point the same way: 50% of Chronographer's written reviews are positive against 98% of Smart Spam Filter's.

UpkeepUpdate frequency

Chronographer ships an update every 2 months, Smart Spam Filter monthly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard6 real differences · 4 level
Chronographer versus Smart Spam Filter: the parameters behind the verdict, then further details
ParameterChronographerSmart Spam Filter
PriceFreeFree
Rating3.4 (5 ratings)4.4 (9 ratings) — better
Positive reviews50.0% of reviews98.1% of reviews — better
Number of ratings59 — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.616.0 — better
Further details — not scored
Size3 MB22 MB
Age rating4+12+
DeveloperRobert FranceJunbum Lee

Customer experience

Chronographer

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Smart Spam Filter

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews54 reviews
Positive98.1%
Neutral1.9%
Negative0.0%

In-app purchases

None

Chronographer

No in-app purchases

2 purchases

Smart Spam Filter

Subscriptions2
  • Buy a cup of coffee per month$2.991 Month
  • Support a chicken per year$29.991 Year

Questions

Is Chronographer free?
Chronographer is free to download, with no in-app purchases.
Is Smart Spam Filter free?
Smart Spam Filter is free to download, with in-app purchases available.
Which has better reviews, Chronographer or Smart Spam Filter?
Smart Spam Filter is rated higher. Chronographer averages 3.4 out of 5 from 5 ratings, while Smart Spam Filter averages 4.4 from 9 ratings.
Do Chronographer or Smart Spam Filter have ads?
Neither Chronographer nor Smart Spam Filter shows ads.
Which is updated more often, Chronographer or Smart Spam Filter?
Chronographer ships an update every 2 months, and Smart Spam Filter monthly. Most recently, Chronographer was updated on November 3, 2026 and Smart Spam Filter on November 4, 2026.

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