Comparison

Logcaliper vs Captain's Log @Life

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

Head to head
About

Logcaliper

This utility app assists IT professionals in calculating and comparing data storage needs for big data and SIEM solutions. It converts various data sizes and rates, estimates storage capacity, and helps size log management systems.

Highlights
  • Data unit conversion
  • Decimal/binary conversion modes
  • Estimate storage capacity
  • Size SIEM solutions
  • Convert message rates
  • Log source list creation
  • Email export of results
Features
Read full description

Your go-to app for data unit conversion, comparison and sizing ############################################### Logcaliper helps IT and security engineers understand the volume of data they are dealing with when designing a big data or security information and event management (SIEM) solution. It converts data sizes and rates, estimates storage for long-term retention, and sizes log management, SIEM and distributed storage clusters. Message rates per second, minute, hour, day or month; bit and byte rates from bits per second up to exabytes per year; decimal or binary units. Free on iPhone and iPad. NEW IN 3.1: - Threshold, a game. Data sizes fall one at a time and you sort each against a line (more than 1 GB? more than a Blu-ray? more than a day of one firewall's logs?) before it hits the floor. Three lives; every miss shows the real number. The items are the app's own figures: the comparison catalogue and log volumes worked out exactly as the Storage screen does. Best score kept on the device. Open it from the About tab, or play on the web at logcaliper.app/threshold/ - Under a conversion to or from a bit or byte rate, a new line says what share of an Ethernet link that stream is, e.g. 24% of 1G Ethernet (payload, not line rate). Long-press copies it with the rest of the answer - Switching decimal and binary now recalculates the answer at once - Four new sizes to compare against: the weights of an 8B, a 70B and a 405B model at 16-bit precision, and a 15-trillion-token training set, by parameter count so they will not date - PCI DSS retention labels now cite requirement 10.5.1 of v4.0.1: 12 months kept, 3 months immediately available HIGHLIGHTS: - Conversion of data size and rate units - Decimal or binary conversion modes - Database of average log sizes for 39 common products, measured from real-world log samples - Typical event rates for 16 source categories: pick a source and see the events per second for that kind of device, with the condition that drives the figure, whether Sysmon is deployed, whether flows are sampled, what the database audit policy is - Customizable average log size - Lists of log sources, with a weighted mean log size across the list - Estimation of storage capacity requirements - Estimation of distributed storage cluster size (e.g., number of Hadoop nodes) - Comparison of any data size against things you recognise, from a page of text to a gram of DNA - Share of an Ethernet link for any bit or byte rate - Long-press any result to copy it, as the number or as the whole sentence with its units and mode - Email export of results - Customizable log retention period - Rounded and simplified results for easier reading - Threshold, a game that teaches the scale of data and log volumes, also playable on the web at logcaliper.app/threshold/ - Requires iOS 18 or later

About

Captain's Log @Life

This utility app allows users to record thoughts via text and voice memos, organizing them in a digital logbook. It also helps track daily goals with a simple list format.

Highlights
  • Text and voice memo recording
  • Organized logbook
  • Daily goal tracking
  • List-based goal management
Features
Read full description

Captain's Log @Life is a utility app to record short thoughts in text and voice memo and access them through the app's log book, as well as keeping track of daily goals, maintained in a list.

Screenshots

Logcaliper4 screens
Captain's Log @Life4 screens

Verdict

The call

The clearest difference is rating: Logcaliper at 4.8 against Captain's Log @Life's 4.0. On price, review sentiment, ratings volume and update cadence 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Logcaliper holds the better App Store score, 4.8 against 4.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Logcaliper ships an update every 6 months, Captain's Log @Life every 7 months. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

Scorecard1 real difference · 9 level
Logcaliper versus Captain's Log @Life: the parameters behind the verdict, then further details
ParameterLogcaliperCaptain's Log @Life
PriceFreeFree
Rating4.8 (5 ratings) — better4.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings5 — better2
Update frequencyEvery 6 months — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad — betteriPhone
Requires iOS18.017.0 — better
Further details — not scored
Size5 MB58 MB
Age rating4+4+
DeveloperChristophe BriguetImago Software

Customer experience

Logcaliper

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Captain's Log @Life

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Logcaliper

No in-app purchases

None

Captain's Log @Life

No in-app purchases

Questions

Is Logcaliper free?
Logcaliper is free to download, with no in-app purchases.
Is Captain's Log @Life free?
Captain's Log @Life is free to download, with no in-app purchases.
Which has better reviews, Logcaliper or Captain's Log @Life?
Logcaliper is rated higher. Logcaliper averages 4.8 out of 5 from 5 ratings, while Captain's Log @Life averages 4.0 from 2 ratings.
Do Logcaliper or Captain's Log @Life have ads?
Neither Logcaliper nor Captain's Log @Life shows ads.
Which is updated more often, Logcaliper or Captain's Log @Life?
Logcaliper ships an update every 6 months, and Captain's Log @Life every 7 months. Most recently, Logcaliper was updated on October 4, 2026 and Captain's Log @Life on October 8, 2026.

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