Comparison

HarnessWorks vs Plain AI

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

Head to head
About

HarnessWorks

Gain real-time insights into production activities with live dashboards and trend analysis. This data-driven approach helps managers make informed decisions and optimize assembly processes proactively.

Highlights
  • Real-time dashboards
  • Trend analysis
  • Data-driven decision making
  • Assembly process optimization
  • Production activity insights
Features
Read full description

Managers gain valuable insights into production activities through HarnessWorks’ real-time dashboards and trend analysis. This data-driven approach enables informed decision-making and proactive optimization of assembly processes.

About

Plain AI

Features
Read full description

Plain AI is a simple, straightforward AI chat app that runs entirely on your device. All conversations are private and processed locally without any internet connection. Key Features • Multiple AI Models: Choose from Llama 3.2 (1B and 3B), Qwen 3.1 1.7B, Gemma 2 2B, or Apple Foundation Models • Complete Privacy: All processing happens on your device - no data is sent to servers • Customizable Parameters: Adjust temperature and top-p settings to control response creativity and diversity • Offline First: Works without internet after initial model download • Clean Interface: Simple, distraction-free chat experience Supported Models • Apple Foundation Models (iOS 26+, no download required) • Llama 3.2 1B (fast and efficient for basic tasks) • Llama 3.2 3B (balanced speed and quality) • Qwen 3.1 1.7B (multilingual support) • Gemma 2 2B (safe and reliable responses) Privacy Your conversations never leave your device. No accounts, no tracking, no data collection. Everything stays private and local. Free Forever Plain AI is completely free with no ads, subscriptions, or in-app purchases. Download a model and start chatting. Requirements • Storage space for downloaded models (approximately 700MB to 2GB per model) • Apple Foundation Models require iOS 26 or later and compatible devices AI responses may occasionally be inaccurate. Please verify important information.

Screenshots

HarnessWorks4 screens
Plain AI4 screens

Verdict

The call

The clearest difference is device support: HarnessWorks at 3 against Plain AI's 1. HarnessWorks also leads on iOS requirement (13.4 vs 17.0). On price, ads and in-app purchases 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.

Scorecard2 real differences · 8 level
HarnessWorks versus Plain AI: the parameters behind the verdict, then further details
ParameterHarnessWorksPlain AI
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.4 — better17.0
Further details — not scored
Size30 MB16 MB
Age rating4+4+
DeveloperharnessWorksJarle Hansen

In-app purchases

None

HarnessWorks

No in-app purchases

None

Plain AI

No in-app purchases

Questions

Is HarnessWorks free?
HarnessWorks is free to download, with no in-app purchases.
Is Plain AI free?
Plain AI is free to download, with no in-app purchases.
Do HarnessWorks or Plain AI have ads?
Neither HarnessWorks nor Plain AI shows ads.

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