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Comparison

Arc vs Principle

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

Head to head
Arc - ν€€νŠΈνˆ¬μž
Arc
Free
πŸ’° Finance
No ratingsView app β†’
Principle: Stock Backtest Sim
Principle

Backtest before you risk money

Free
πŸ’° Finance
No ratingsView app β†’
About

Arc

Features
Read full description

* Arc β€” μ‹€μ‹œκ°„ νŠΈλ ˆμ΄λ”© μ‹ ν˜Έ & 차트 뢄석 ν”Œλž«νΌ AAPL, TeslaλΆ€ν„° λͺ¨λ“  μ£Όμ‹μ˜ 졜적 λ§€μˆ˜Β·λ§€λ„ 타이밍을 μ‹€μ‹œκ°„μœΌλ‘œ 뢄석해 λ“œλ¦½λ‹ˆλ‹€. 【 핡심 κΈ°λŠ₯ 】 1. μ‹€μ‹œκ°„ μ‹ ν˜Έ 생성 - RSI, MACD, λ³Όλ¦°μ € λ°΄λ“œ 3가지 기술 μ§€ν‘œλ₯Ό λ™μ‹œ λΆ„μ„ν•˜μ—¬ λ§€μˆ˜Β·λ§€λ„ μ‹ ν˜Έλ₯Ό μžλ™ μƒμ„±ν•©λ‹ˆλ‹€. μ‹ ν˜Έ 강도와 리슀크/λ¦¬μ›Œλ“œ λΉ„μœ¨μ„ ν•œλˆˆμ— ν™•μΈν•˜μ„Έμš”. 2.μ „λ¬Έ 차트 뢄석 - μΊ”λ“€μŠ€ν‹± μ°¨νŠΈμ— RSI, MACD, λ³Όλ¦°μ € λ°΄λ“œλ₯Ό μ„œλΈŒνŒ¨λ„λ‘œ ν‘œμ‹œν•©λ‹ˆλ‹€. 1뢄봉뢀터 μ—°λ΄‰κΉŒμ§€ λ‹€μ–‘ν•œ νƒ€μž„ν”„λ ˆμž„μ„ μ§€μ›ν•©λ‹ˆλ‹€. μ’…λͺ©λͺ… λ˜λŠ” ν‹°μ»€λ‘œ λͺ¨λ“  주식 검색 κ°€λŠ₯ν•©λ‹ˆλ‹€. 3. 거래 좔적 & μ„±κ³Ό 뢄석 - μ§„μž…ν•œ 거래λ₯Ό κΈ°λ‘ν•˜κ³  μ „λž΅λ³„ 승λ₯ , 평균 수읡, 손읡 톡계λ₯Ό μžλ™μœΌλ‘œ κ³„μ‚°ν•©λ‹ˆλ‹€. μ–΄λ–€ μ „λž΅μ΄ νš¨κ³Όμ μΈμ§€ λ°μ΄ν„°λ‘œ ν™•μΈν•˜μ„Έμš”. 4. ꢌμž₯ ν¬μ§€μ…˜ 계산 - κ³„μ’Œ μž”κ³ μ™€ 리슀크 λΉ„μœ¨μ„ μ„€μ •ν•˜λ©΄ 졜적 μˆ˜λŸ‰κ³Ό μ†μ ˆΒ·μ΅μ ˆκ°€λ₯Ό μžλ™μœΌλ‘œ κ³„μ‚°ν•©λ‹ˆλ‹€. 【 κΈ°λ³Έ λͺ¨λ‹ˆν„°λ§ μ’…λͺ© 】 - λ―Έκ΅­ 주식 μ’…λͺ© 【 μ£Όμ˜μ‚¬ν•­ 】 - λ³Έ 앱은 투자 정보 제곡 λͺ©μ μœΌλ‘œλ§Œ μ‚¬μš©λ˜λ©°, 투자 결정에 λŒ€ν•œ μ±…μž„μ€ μ‚¬μš©μž λ³ΈμΈμ—κ²Œ μžˆμŠ΅λ‹ˆλ‹€. 투자 μƒν’ˆμ€ μ›κΈˆ 손싀이 λ°œμƒν•  수 μžˆμŠ΅λ‹ˆλ‹€.

About

Principle

Features
Read full description

How long will you keep investing on gut feeling? Build your trading rules without code. Test them on US and Korean stocks. Combine moving averages, stop-loss, and partial take-profit to backtest your strategy. For education and entertainment only. Past simulation does not predict future results. Build rules. Let the data answer. -- Rule Builder - Set moving average periods, stop-loss, and take-profit with a few taps - No coding required, ready in 1 minute - Combine partial buy/sell, multi-stage take-profit, and more -- Historical Backtest - US and Korean daily stock data - 1 token per stock - Cached results reuse on identical conditions (no extra token) -- Result Analysis - Cumulative return chart - Buy/sell signal markers on the price chart - Maximum drawdown, win rate, average holding period and more -- Share Your Rules - Share your rules with friends - Import rules from others and backtest them yourself -- Invite Friends - Verify more, together - Share your invite code; when a friend signs up and enters it, - you and your friend each get 15 tokens (up to 10 invites per month) -- Token Packs - 4 token packs: 10 / 33 / 115 / 600 tokens - Larger packs include more bonus tokens -- Disclaimer - This app is an education and entertainment simulation tool. - This app does NOT provide investment advice, stock picks, or trading signals. - Backtest results are simulations based on past data and do not guarantee future returns. - This app is NOT connected to live trading. - The company assumes no responsibility for any losses in actual trading.

Screenshots

Arc4 screens
Principle4 screens

Verdict

The call

The clearest difference is in-app purchases: Arc at none against Principle's 4. Arc also leads on update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Principle sells 4 one-off in-app purchases. Arc asks for nothing beyond the download.

UpkeepUpdate frequency

Arc ships an update every 2 days, Principle every 2 months. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

Scorecard2 real differences Β· 4 level
Arc versus Principle: the parameters behind the verdict, then further details
ParameterArcPrinciple
PriceFreeFree
Update frequencyEvery 2 days β€” betterEvery 2 months
AdsYesYes
In-app purchasesNo β€” betterYes
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.013.0
Further details β€” not scored
Size29 MB57 MB
Age rating17+4+
Developerkyeongju Moonμ£Όμ‹νšŒμ‚¬ 유자

In-app purchases

None

Arc

No in-app purchases

4 purchases

Principle

One-time4
  • 10 Tokens$1.99
  • 33 Tokens$4.99
  • 115 Tokens$14.99
Show 1 more
  • 600 Tokens$59.99

Questions

Is Arc free?
Arc is free to download, with no in-app purchases.
Is Principle free?
Principle is free to download, with in-app purchases available.
Do Arc or Principle have ads?
Both Arc and Principle show ads.
Which is updated more often, Arc or Principle?
Arc ships an update every 2 days, and Principle every 2 months. Most recently, Arc was updated on October 8, 2026 and Principle on October 24, 2026.

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