Comparison

coreVIEWER vs BoltKit

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

Head to head
About

coreVIEWER

Read full description

With the app coreVIEWER measurement data of the smart sensor can be transferred to a mobile device, displayed and recorded. All sensors, measuring amplifiers and gateways can be connected, configured and visualized via the coreVIEWER app. coreVIEWER in a short portrait: Overview of all available sensors Simultaneous connection with up to 4 measuring amplifiers Live display and recording of measurement data Configuration of measuring amplifier and gateway Starting the data logger on the measuring amplifier Different display modes Programming of thresholds and events Measurement data in dashboard view: Measurement data are clearly displayed on the dashboard. For each measured value, the average value is displayed with min / max values, the time interval is configurable. The measured values can be reset by a tare function (to zero). Measurement data in diagram view: By tapping on a measured variable, it is illustrated in a diagram as a function of time. Recording measurements: A REC button is used to start or end a recording of the measured variables, which is saved as a CSV file on the device.

About

BoltKit

Features
Read full description

BoltKit puts 10 essential developer tools in one beautifully crafted app โ€” right on your iPhone and iPad. Everything is completely free. ALL 10 TOOLS โ€” FREE โ€ข ChmodCalc โ€” Unix file permissions calculator with interactive checkbox grid, octal and symbolic output, and common presets. โ€ข CronBuilder โ€” Build cron expressions visually with field editors, quick presets, human-readable descriptions, and next-run previews. โ€ข EpochTime โ€” Convert between Unix timestamps and human-readable dates with a live ticker, bidirectional conversion, and timezone picker. โ€ข Base64Lab โ€” Encode and decode Base64 with support for URL-safe variants and automatic input detection. โ€ข SubnetCalc โ€” IP subnet calculator with CIDR slider, network/broadcast addresses, usable host range, and binary view. โ€ข DNSLookup โ€” Query DNS records via DNS-over-HTTPS using Cloudflare or Google resolvers. Supports A, AAAA, MX, CNAME, TXT, and more. โ€ข HTTPCodes โ€” Searchable HTTP status code reference grouped by category โ€” 1xx through 5xx with descriptions and usage notes. โ€ข JSONPretty โ€” Format, validate, and minify JSON with syntax highlighting and a collapsible tree view. โ€ข RegexLab โ€” Test regex patterns with live matching, capture group extraction, flag toggles, and a library of common examples. โ€ข JWTInspect โ€” Decode and inspect JWT tokens โ€” view header, payload, signature, algorithm, and expiry status at a glance. Every tool includes unlimited saves, full history, and export/share โ€” no limits, no paywalls, no in-app purchases. PRIVACY FIRST BoltKit runs entirely on your device. No accounts, no tracking, no analytics, no data collection. Your data never leaves your iPhone or iPad. Built with Apple's Liquid Glass design for iOS 26. Zero third-party dependencies. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://boltkit.app/privacy-policy.html Terms of Service: https://boltkit.app/terms-of-service.html

Screenshots

coreVIEWER4 screens
BoltKit4 screens

Verdict

The call

The clearest difference is in-app purchases: coreVIEWER at none against BoltKit's 1. coreVIEWER also leads on iOS requirement (13.0 vs 26.0). BoltKit's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

coreVIEWER ships an update every 2 months, BoltKit every 3 weeks. Both last shipped on September 21, 2026.

Scorecard3 real differences ยท 3 level
coreVIEWER versus BoltKit: the parameters behind the verdict, then further details
ParametercoreVIEWERBoltKit
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS13.0 โ€” better26.0
Further details โ€” not scored
Size71 MB1 MB
Age rating4+4+
Developercore sensing GmbHPAUL SNYMAN

In-app purchases

None

coreVIEWER

No in-app purchases

1 purchases

BoltKit

One-time1
  • BoltKit Pro$8.99

Questions

Is coreVIEWER free?
coreVIEWER is free to download, with no in-app purchases.
Is BoltKit free?
BoltKit is free to download, with in-app purchases available.
Do coreVIEWER or BoltKit have ads?
Neither coreVIEWER nor BoltKit shows ads.
Which is updated more often, coreVIEWER or BoltKit?
coreVIEWER ships an update every 2 months, and BoltKit every 3 weeks. Most recently, coreVIEWER was updated on September 21, 2026 and BoltKit on September 21, 2026.

Other comparisons