Comparison

SCPI Commander vs Occur

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

Head to head
About

SCPI Commander

Control LXI enabled instruments directly from your device. Send SCPI commands, automate measurements with a built-in script engine, and process results. Easily manage and export instrument data, logs, and screen dumps.

Highlights
  • Connect to LXI instruments
  • Send SCPI commands
  • Built-in script engine
  • Automate measurements
  • Process measurement results
  • Export data and logs
  • Instrument identity inquiry
Features
Read full description

This app will connect to any LXI enabled instrument. You can control and get data back using for example SCPI (Standard Commands for Programmable Instruments) or any other kind of commands that can be send as plain ASCII over socket. Built-in script engine to automatize measurement and process the result. Features * Connected instrument can be added as favorite to make connection easier next time. * Automatically enquires the identity of the connected instrument. * Favorites can be exported as a CSV file. * Interactive IO, send and see the results immediately * Logging off a number of measurement. * Easy export off the session from both interactive io and logging measurement . * Ability to change the time-out value * Ability to change how much data can be read back. * Quick access to the instrument web-page * Quick access to common SCPI commands. * During logging, possible to pause and step through measurements. * Extensive help for interactive IO and logging measurement * Script Engine to automatize measurement * Process the measured values * Statistical calculations (Mean, Median, Standard deviation) * Export Statistical, binary blocks etc as CSV. * Easy to get screen-dump from connected instrument, save, print, view and zoom * Help for all screens, including all commands * Possibility to print favorites, logs and picture (AirPrint enabled printer)

About

Occur

Features
Read full description

Occur|一记 是一款轻量的「事件频率记录」应用。 当一件事情发生时,你只需要记一下: • 头疼了一次 • 喝了一口水 • 焦虑了一下 • 喝了一杯咖啡 不需要目标,不需要坚持,也没有完成与失败。 Occur 不关注你“有没有做到”, 而是帮你看见:事情发生了多少次。

Screenshots

SCPI Commander4 screens
Occur4 screens

Verdict

The call

The clearest difference is update cadence: SCPI Commander at weekly against Occur's every 4 months. SCPI Commander also leads on iOS requirement (13.0 vs 17.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SCPI Commander ships an update weekly, Occur every 4 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
SCPI Commander versus Occur: the parameters behind the verdict, then further details
ParameterSCPI CommanderOccur
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyWeekly — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size6 MB26 MB
Age rating4+4+
DeveloperMichael Augustsson越勇 梁

In-app purchases

None

SCPI Commander

No in-app purchases

None

Occur

No in-app purchases

Questions

Is SCPI Commander free?
SCPI Commander is free to download, with no in-app purchases.
Is Occur free?
Occur is free to download, with no in-app purchases.
Do SCPI Commander or Occur have ads?
Neither SCPI Commander nor Occur shows ads.
Which is updated more often, SCPI Commander or Occur?
SCPI Commander ships an update weekly, and Occur every 4 months. Most recently, SCPI Commander was updated on October 24, 2026 and Occur on October 28, 2026.

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